4 results about "Heat stress" patented technology

The invention discloses a composite high-strength Nixing pottery material which is characterized by comprising, by weight, 3-6 parts of east mud, 3-6 parts of west mud, 2-3 parts of clinker after calcination of Nixing potteries, 5-9 parts of zinc oxide, 0.3-0.6 part of serpentine, 0.6-0.8 part of spodumene, 4-7 parts of fine silicon carbide powder and 2-4 parts of tungsten molybdenum rare earth alloy powder. Silicon carbide is added into the Nixing pottery material, so that a forged green body has high hardness, thermal shock resistance and an excellent heat conductivity coefficient, smaller heat stress is applied onto the green body in the heating or cooling process, and the green body has excellent abrasion resistance by a sprayed tungsten molybdenum rare earth alloy.

The invention provides to a method for cloning and expressing recombinant chicken interferon (IFN)-gamma genes and detecting the activity of the recombinant chicken IFN-gamma genes. The method comprises the following steps of: augmenting ChIFN-gamma gene segments without the signal peptide by taking recombinant plasmids PMD-18T-preIFN-gamma with signal peptide as a template; subcloning the product after being sequenced to an expression vector pProEXTMHTa; converting the expression vector pProEXTMHTa-ChIFN-gamma into an expression host E.coli DH5alpha; and optimizing the best induction condition. Due to the method, a foundation is formed for researching and developing a novel anti-virus interferon preparation. When purified recombinant ChIFN-gamma fusion protein is used for performing immunization on broilers, the result shows that: under the heat stress condition of the ChIFN-gamma fusion protein, the HSP-70 expression quantity of different organs can be influenced; the recombinant ChIFN-gamma fusion protein delays the generation of the HSP-70; and the negative influence caused by the heat stress can be relieved.

The invention relates to a Chinese herbal medicine preparation for preventing and treating heat stress of a laying hen. The Chinese herbal medicine preparation is prepared from wrinkled giant hyssop, pine needle, licorice and cactus. The Chinese herbal medicine preparation is prepared according to the traditional Chinese veterinarian theory science, has obvious effects of preventing and treating heat stress of a laying hen, can be processed into powder, has a low cost and is convenient for use.